IBPS Syllogism and Logical Reasoning 4

Question 1

Statements: All rivers are oceans. Some oceans are seas. Conclusions: I. Some rivers are seas. II. Some seas are oceans. Which conclusion(s) follow?

Accepted Answer

Only II follows

Answer

There is no direct link between rivers and seas; converting 'some oceans are seas' gives 'some seas are oceans.'

Question 2

A is taller than B. C is shorter than D. D is taller than A. Who is the tallest?

Accepted Answer

D

Answer

D > A > B and D > C, so D is the tallest among all.

Question 3

Statements: Some coins are notes. All notes are currency. Conclusions: I. All coins are currency. II. Some currency are coins. Which conclusion(s) follow?

Accepted Answer

Only II follows

Answer

Only some coins are notes, so we cannot say all coins are currency; from 'some coins are notes' and 'all notes are currency,' some coins are currency, converting to some currency are coins.

Question 4

Six people A, B, C, D, E, F sit in a circle facing the centre. B sits between A and C. D sits opposite B. Who sits opposite A?

Accepted Answer

E

Answer

With B between A and C and D opposite B, the remaining seats for E and F place E opposite A in a symmetric circular arrangement.

Question 5

Statements: No star is a planet. All planets are celestial bodies. Conclusions: I. No star is a celestial body. II. Some celestial bodies are not stars. Which conclusion(s) follow?

Accepted Answer

Only II follows

Answer

Stars could be celestial bodies through other links, so Conclusion I is too strong; but since planets (a subset of celestial bodies) are not stars, some celestial bodies are not stars.

IBPS - Institute of Banking Personnel Selection Practice Test

IBPS - Institute of Banking Personnel Selection Practice Test

IBPS Syllogism and Logical Reasoning 4